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CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |  |
Net Income (loss) | $ (697)us-gaap_ProfitLoss | $ (6,813)us-gaap_ProfitLoss | $ 6,150 us-gaap_ProfitLoss
Adjustments to reconcile net income (loss) to net cash provided by operations: |  |  |
Depreciation and amortization | 5,639 us-gaap_DepreciationDepletionAndAmortization | 5,470 us-gaap_DepreciationDepletionAndAmortization | 3,927 us-gaap_DepreciationDepletionAndAmortization
Amortization of marketable securities premium | 432 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 518 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments | 323 us-gaap_AccretionAmortizationOfDiscountsAndPremiumsInvestments
Stock-based compensation | 1,129 us-gaap_ShareBasedCompensation | 1,277 us-gaap_ShareBasedCompensation | 1,215 us-gaap_ShareBasedCompensation
Provision for doubtful accounts | 9 us-gaap_ProvisionForDoubtfulAccounts | 869 us-gaap_ProvisionForDoubtfulAccounts | 0 us-gaap_ProvisionForDoubtfulAccounts
Realized gain on sale of investments | (1,263)us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | 0 us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses | 0 us-gaap_AvailableForSaleSecuritiesGrossRealizedLosses
Gain on sale of cost method investment | 0 us-gaap_CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments | (811)us-gaap_CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments | 0 us-gaap_CostmethodInvestmentsRealizedGainLossExcludingOtherThanTemporaryImpairments
Loss (gain) on disposal of property, plant and equipment | (13)us-gaap_GainLossOnSaleOfPropertyPlantEquipment | (9)us-gaap_GainLossOnSaleOfPropertyPlantEquipment | 195 us-gaap_GainLossOnSaleOfPropertyPlantEquipment
Changes in assets and liabilities: |  |  |
Accounts receivable, net | (2,959)us-gaap_IncreaseDecreaseInAccountsReceivable | 2,160 us-gaap_IncreaseDecreaseInAccountsReceivable | 54 us-gaap_IncreaseDecreaseInAccountsReceivable
Inventories | 479 us-gaap_IncreaseDecreaseInInventories | 1,439 us-gaap_IncreaseDecreaseInInventories | 5,659 us-gaap_IncreaseDecreaseInInventories
Prepaid expenses and other current assets | 2,393 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | (645)us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets | 1,784 us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets
Other assets | (255)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets | (1,859)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets | (174)us-gaap_IncreaseDecreaseInOtherNoncurrentAssets
Accounts payable | (979)us-gaap_IncreaseDecreaseInAccountsPayable | 2,185 us-gaap_IncreaseDecreaseInAccountsPayable | 2,608 us-gaap_IncreaseDecreaseInAccountsPayable
Accrued liabilities | 742 us-gaap_IncreaseDecreaseInAccruedLiabilities | (899)us-gaap_IncreaseDecreaseInAccruedLiabilities | 461 us-gaap_IncreaseDecreaseInAccruedLiabilities
Other long-term liabilities | (833)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities | (373)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities | (900)us-gaap_IncreaseDecreaseInOtherNoncurrentLiabilities
Net cash provided by operating activities | 3,824 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 2,509 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 21,302 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash flows from investing activities: |  |  |
Purchases of property, plant and equipment | (1,971)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (5,424)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment | (7,079)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment
Proceeds from disposal of property, plant and equipment | 13 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 0 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment | 2 us-gaap_ProceedsFromSaleOfPropertyPlantAndEquipment
Purchases of available for sale securities | (11,828)us-gaap_PaymentsToAcquireAvailableForSaleSecurities | (14,092)us-gaap_PaymentsToAcquireAvailableForSaleSecurities | (12,116)us-gaap_PaymentsToAcquireAvailableForSaleSecurities
Proceeds from sales and maturities of available for sale securities | 13,928 us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities | 12,486 us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities | 6,900 us-gaap_ProceedsFromSaleAndMaturityOfAvailableForSaleSecurities
Repayment from (Loans to) related parties | 0 us-gaap_PaymentsToFundLongtermLoansToRelatedParties | 818 us-gaap_PaymentsToFundLongtermLoansToRelatedParties | (875)us-gaap_PaymentsToFundLongtermLoansToRelatedParties
Net cash provided by (used in) investing activities | 142 us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (6,212)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (13,168)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash flows from financing activities: |  |  |
Proceeds from common stock options exercised | 134 us-gaap_ProceedsFromStockOptionsExercised | 532 us-gaap_ProceedsFromStockOptionsExercised | 294 us-gaap_ProceedsFromStockOptionsExercised
Repurchases of the Company's common stock, including commission | 0 us-gaap_PaymentsForRepurchaseOfCommonStock | (716)us-gaap_PaymentsForRepurchaseOfCommonStock | 0 us-gaap_PaymentsForRepurchaseOfCommonStock
Dividends paid by joint ventures | (166)axti_PaymentsOfDividendsByJointVentures | (2,329)axti_PaymentsOfDividendsByJointVentures | (4,086)axti_PaymentsOfDividendsByJointVentures
Net cash used in financing activities | (32)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (2,513)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | (3,792)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of exchange rate changes on cash and cash equivalents | (81)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | 543 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | 136 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net increase (decrease) in cash and cash equivalents | 3,853 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (5,673)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 4,478 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at the beginning of the year | 24,961 us-gaap_CashAndCashEquivalentsAtCarryingValue | 30,634 us-gaap_CashAndCashEquivalentsAtCarryingValue | 26,156 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at the end of the year | 28,814 us-gaap_CashAndCashEquivalentsAtCarryingValue | 24,961 us-gaap_CashAndCashEquivalentsAtCarryingValue | 30,634 us-gaap_CashAndCashEquivalentsAtCarryingValue
Supplemental disclosures: |  |  |
Income taxes paid | $ 293 us-gaap_IncomeTaxesPaid | $ 782 us-gaap_IncomeTaxesPaid | $ 1,729 us-gaap_IncomeTaxesPaid

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- Definition The cash outflow associated with extending a long-term loan to a related party. Alternate caption: Payments for Advances to Affiliates. + References No definition available. + Details
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- Definition The cash inflow associated with the sale or maturity (principal being due) of securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow from the sale of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4K -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591552-111686 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 45 -Paragraph 19 -URI http://asc.fasb.org/extlink&oid=7656940&loc=SL4569616-111683 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (a),(c) -URI http://asc.fasb.org/extlink&oid=18733093&loc=SL4573702-111684 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 55 -Paragraph 4J -URI http://asc.fasb.org/extlink&oid=31814832&loc=SL4591551-111686 + Details
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- Definition Amount of expense related to write-down of receivables to the amount expected to be collected. Includes, but is not limited to, accounts receivable and notes receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.5) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Article 5 + Details
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